Designed for water filtration/softener and plumbing installations, the white twist & lock range of fittings from John Guest are available from ½ in to 1-in. copper tube sizes (CTS). They are manufactured from high quality engineered plastic with EPDM O-rings and are UV stabilized for outdoor use. The twist and lock technology also provides installers with additional security and the fittings can be installed onto any combination of copper, CPVC, or PEX pipe.
